b. Remove the “knockout” on the top side of the frame.
c. Remove disconnect switch bracket by loosening the two
screws on the right side.
d. Feed the power supply cable through the frame allowing
6" (152mm) of lead to remain inside the back box (using cable
clamp, connector, or other suitable strain relief).
e. Secure the power supply cable to the back box (using cable
clamp, connector, or other suitable strain relief) allowing
6" (152mm) of lead to remain inside the back box.
f. Connect supply wires to blue wires of disconnect switch using
wiring connectors (see wiring diagram, next page).
g. Ground the back box by connecting the supply ground leadwire
to the green ground screw located in the inside top of the box.
h. Secure disconnect switch bracket in place.
Installation of Heater Assembly and Grille
After back box is completely installed and no further
construction dirt is expected, clean debris from back box, remove
heater assembly from its carton, then refer to Figure 4 and proceed
as follows:
1. Insert the heater assembly into back box, placing the four
mounting holes (with key-hole slots) over the screws in the
housing. Tighten all screws securely.
2. If surface-mounting frame is used, ensure that the frame is even
with all four heater assembly tabs before tightening screws.
3. Connect the two disconnected switch wires to the heat-control
switch (thermostat) leads using wirenuts (see wiring diagram,
next page). After connection, push wires back into the
opening.
4. Turn thermostat to the extreme counterclockwise position.
5. Push disconnect switch into ON position.
6. Install (2) plastic covers on back box as follows: (See Fig. 4)
NOTE: Both top and bottom plastic covers are identical.
• TOP - Align the screw bosses on the back of the plastic cover
with the second hole down from the top of the back box and
attach it with the two screws provided.
• BOTTOM - Align the screw bosses on the back of the other
plastic cover with holes at the bottom of the back box that are
just above the fan deck mounting screws and attach it with two
screws provided.
7. Remount the wire compartment cover. Install the front cover by
hooking the (2) tabs on the one side then rotating the front cover
into place making sure that all four tabs are snapped onto the
front cover.
8. Fit the thermostat knob onto the thermostat shaft and push into
place.
Operation
1. Rotate the thermostat fully clockwise. This should energize the
heating elements and cause warm air to flow from the hot air
discharge at the openings in the bottom of the grille.
NOTE: This heater is provided with a fan delay control that allows
the heating element to warm prior to the fan coming on. This delay
will also allow the fan to operate for a short period after the heating
element has been turned off to remove the residual heat from the
heater.
2. After the operation check, rotate the thermostat to the desired
position to obtain room comfort.
3. For continuous fan only operation (elements will not be
energized) rotate thermostat knob where indicator dot on knob is
aligned with “FAN”.
NOTE: For best results, the heater should be left “ON”
constantly during the heating season because the thermostat, when
properly set, will maintain the desired temperature.
Fig. 4
THERMOSTAT KNOB
FRONT COVER
PLASTIC
COVER
PLASTIC COVER
POWER LEADS
BACK BOX
INNER FRAME
ASSEMBLY
RECESS WALL
HOUSING
DISCONNECT
SWITCH
THERMOSTAT
3
MANUAL
RESET
LIMIT
DISCONNECT
L1
L2 or N
ELEMENT
ELEMENT
F.D.
FAN MOTOR
T-STAT
L1 OFF
CYC
L2
DISCONNECT
L1
L2 or N
F.D.
L1 OFF
CYC
L2
FAN MOTOR
MANUAL
RESET
LIMIT
ELEMENT
T-STAT
FAN MOTOR
MANUAL
RESET
LIMIT
T-STAT
L1 OFF
CYC
L2
DISCONNECT
L1
L2 or N
F.D.
SEC
PRI
ELEMENT
ELEMENT
4800, 4000, & 3000 WATT HEATERS
208V, 240V, OR 277V (Full wattage heaters can be converted to half
wattage by removing the red jumper wire connecting the top and bot-
tom element terminals.)
4800, 4000, & 3000 WATT HEATERS
347V, 600V
2000 & 1500 WATT HEATERS
208V, 240V, OR
277V
WIRING DIAGRAMS (ALL 1Ø)
ELEMENTS
FAN
MOTOR
FAN
DELAY
RELAY
FIELD WIRING
GND
THERMOSTAT
MANUAL
RESET
1
6
8
4
6
2
WIRING DIAGRAM
FOR THREE PHASE WALL HEATERS
CYC
L1
L2
OFF
DISCONNECT
ELEMENTS
FIELD WIRING
GND
WIRING DIAGRAM
4800 WATT 208 VOLT
SINGLE PHASE WALL HEATER
DISCONNECT
FAN
MOTOR
FAN
DELAY
MANUAL
RESET
RELAY
1
0
8
4
6
2
CYC
L1
L2
OFF
WIRING DIAGRAMS (ALL 1Ø)
